Astell&Kern / A&norma SR35 Purple

The A&norma SR35 Purple is a high-quality, compact, long-lasting speaker. It is a limited edition of only 300 units.

■The essence of Astell&Kern technology - equipped with a new generation amplifier
・Astell&Kern's brand philosophy of "not overlooking even the slightest difference in sound quality" has earned them numerous acclaim through the release of premium audio players that combine innovative circuitry and amplifier technology. The A&norma SR35 is equipped with the next-generation amplifier technology used in the flagship A&ultima line, and is designed with A&norma's own proprietary technology so that A&norma users can enjoy high-level sound that approaches the A&ultima line. The new-generation amplifier technology used is Astell&Kern's unique amplifier design, which effectively improves noise reduction at high output.As a result, the A&norma SR35 has been completely transformed into a new generation amplifier design suitable for premium audio, from the selection of OP-AMP to component layout and circuit design. Furthermore, the current processing capacity on the output side has been improved, achieving even higher output while maintaining a high S/N ratio and low distortion. It maximizes the performance of various earphones and headphones with different impedances.

■ Evolved "TERATON ALPHA" sound solution
- Equipped with TERATON ALPHA, the ultimate sound solution that integrates the main circuits developed by Astell&Kern. TERATON ALPHA is Astell&Kern's ultimate sound solution that realizes audio playback close to the original sound through the audio output interface by effectively eliminating power supply noise, efficient power management, and low-distortion amplification. It is equipped with Astell&Kern's patented technology, born from tens of thousands of hours of continuous research and development, in order to reproduce sounds close to the original sounds intended by artists and producers.

■ Equipped with two-stage gain control
- In order to seamlessly use highly sensitive and delicate IEMs or headphones with high impedance that are difficult to drive, it is necessary to provide appropriate output according to the specifications of the connected device. The A&norma SR35 supports two-stage gain control of normal gain and high gain thanks to improved current processing capacity through new generation amplifier technology. By achieving a high output of 6Vrms when balanced output in high gain mode, it is possible to drive various IEMs and headphones with ease.

■All-Day Music - Achieves long continuous playback of approximately 20 hours
・The A&norma SR35 offers the best portability as a digital audio player with class-leading long playback and powerful output. The compact size of the A&norma SR35 fits snugly in your pocket, and it is lightweight at just 184g, making it comfortable to carry. In addition, in Dual DAC mode, it achieves long continuous playback of approximately 20 hours, so you can enjoy music without frequent charging.

■Latest UI/UX with improved visuals and operability
・A&norma SR35 has been redesigned with a crimson-themed UI/UX. It has been reborn as a "true music player" that allows users to enjoy music more deeply. The new UI/UX is designed to allow users to quickly browse music categories and rediscover songs in their music library. It also adds a function that allows users to easily search for album art, allowing them to rediscover the fun of looking at album art while listening to music.
The theme is based on the keywords "edge," "simple," and "dark mode." In addition, the black-on-red color theme reduces visual fatigue and provides an intuitive user experience. In addition, various features have been added to improve the usability of the device, such as app services, artist view, album sorting, and album art search functions. Immerse yourself in music with the new UI/UX.

■Dual-band Wi-Fi (2.4/5GHz) support
・A&norma SR35 now supports dual-band Wi-Fi (2.4GHz/5GHz). Enjoy more robust Wi-Fi streaming.

■Other excellent audio performance and high functionality expandability
・DAC filter can be changed *4 types
・Replay Gain function *Supports sound sources up to 192kHz/24bit
・USB-DAC function *Windows driver can be downloaded from HP
・USB digital audio output function
・Equipped with Bluetooth 5.0, supports aptX HD/LDAC codec
・Bluetooth receiver "BT Sink" function
・"AK File Drop" function for wireless file transfer
・Supports DLNA-enhanced network audio playback function "AK Connect"
・"V-Link (Movie/Music)" function for watching YouTube videos/music streaming services
・"Open APP Service" function for installing music streaming service apps, etc.
・Supports AK CD-RIPPER (sold separately)


■Color: Purple
■Body material: Aluminum
■Display: 3.6-inch HD (720 x 1280) touch screen
■Supported file formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
■Supported sampling rate:
　PCM maximum: 384KHz (16/24/32bit)　DSD maximum: DSD256 (11.2MHz/1bit) stereo
■Output level:
　[Normal gain] Unbalanced 2.1Vrms / Balanced 4Vrms (no load)
　[High gain] Unbalanced 3.1Vrms / Balanced 6Vrms (no load)
■CPU: Quad-core
■DAC: Ciruss Logic CS43198 x 4 (Quad-DAC)
■Input: USB Type-C (Charging & Data Transfer)
Output: 3.5mm 3-pole unbalanced output / 2.5mm 4-pole balanced output / 4.4mm 5-pole balanced output (with GND connection)
■Wi-Fi: 802.11 a/b/g/n/ac (2.4GHz/5GHz)
■Bluetooth: V5.0 (A2DP, AVRCP / Qualcomm? aptX? HD, LDAC)
■Size (W×H×D): 64mm × 108.3mm × 16.1mm
■Weight: Approx. 184g
■Firmware update: OTA
■Operating temperature: 0℃ ~ +40℃
■Frequency response:
　±0.012dB (20Hz~20kHz) unbalanced
　±0.011dB (20Hz~20kHz) balanced
　±0.125dB (20Hz~70kHz) unbalanced
　±0.126dB (20Hz~70kHz) balanced
■S/N ratio: 127dB @ 1kHz, unbalanced / 130dB @ 1kHz, balanced
■Crosstalk: -133dB @ 1kHz, unbalanced / -145dB @ 1kHz, balanced
■THD+N: 0.0005% @ 1kHz, unbalanced / 0.0006% @ 1kHz, balanced
■IMD: 0.0002% 800Hz 10kHz (4:1) unbalanced / 0.0002% 800Hz 10kHz (4:1) balanced
■Output impedance: unbalanced 3.5mm (1.1Ω) / balanced 2.5mm (2.7Ω), 4.4mm (2.7Ω)
■Clock jitter: 25ps (Typ)
■Reference clock jitter: 70ps
■Battery: 3,150mAh 3.7V lithium polymer
■Charging time: Approximately 2.5 hours (when charging at 5V/2A)
■Playback time: Approximately 20 hours (FLAC, 44.1KHz/16bit, Vol.50, LCD Off, Unbalanced, Normal Gain, Dual DAC)
■Built-in memory: 64GB [NAND] *including system area
■External memory support: 1 microSD slot (up to 1TB)
■Supported OS: Windows 10 (32/64bit) 11 (64bit) / MAC OS X 10.7
■Accessories: USB Type-C cable (C to C), screen protector, microSD card slot cover
■Country of manufacture: Korea
■Manufacturer's warranty: 1 year for main unit / 90 days for accessories